1000210-73-0Relevant articles and documents
Preparation method of 5, 7-dichloro-1, 2, 3, 4-tetrahydroisoquinoline
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Paragraph 0019; 0022; 0026; 0032-0033; 0039; 0044-0045, (2021/02/06)
The invention provides a preparation method of 5, 7-dichloro-1, 2, 3, 4-tetrahydroisoquinoline. The preparation method comprises the following steps: preparing a compound A by taking 3, 5-dichlorobenzoic acid as a raw material; preparing a compound B from the compound A; preparing a compound C from the compound B; preparing a compound D from the compound C; and obtaining a white solid 5, 7-dichloro-1, 2, 3, 4-tetrahydroisoquinoline from the compound D. The preparation method of 5, 7-dichloro-1, 2, 3, 4-tetrahydroisoquinoline provided by the invention has the advantages of high product purity and high product yield.
LFA-1 INHIBITOR AND POLYMORPH THEREOF
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Paragraph 00113; 00114, (2014/02/16)
Methods of preparation and purification of a compound, intermediates thereof, a polymorph thereof, and related compounds are disclosed. Formulations and uses thereof in the treatment of LFA -1 mediated diseases are also disclosed.